Day 1

Introduction

Today I explored how the Serial Monitor works in Arduino and how variables help store data. It was my first hands-on session, and I began understanding how communication between the Arduino and the computer happens.

What I Did

• Used Serial.begin() to start serial communication
• Printed values to the Serial Monitor using Serial.print() and Serial.println()
• Declared and initialized variables of different types (int, float, char, bool)

New Concepts and Functions

• Serial.begin(9600) – Starts the Serial Monitor with a specific baud rate
• Serial.print() – Prints a message or variable to the Serial Monitor (same line)
• Serial.println() – Prints a message or variable and moves to a new line
• Main data types in Arduino:
  • int – Integers
  • char – Characters
  • float – Decimal numbers
  • bool – Boolean values (true/false)

Challenges

I had a minor issue understanding the difference between Serial.print() and Serial.println(), but testing them helped me see how the cursor moves with each.

Code Snippets

void setup() {
  Serial.begin(9600); // start serial communication
  int myNumber = 5;
  Serial.print("My number is: ");
  Serial.println(myNumber);
}

void loop() {
  // nothing here for now
}
    

Conclusion

It was a good start to understanding how data moves between the Arduino and computer. I’m excited to try input devices like buttons or sensors next.

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